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Finding the Fourth Proportional to 458,163.28, 632,268.78 and 251,430.28

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Solution

The fourth proportional to 458,163.28, 632,268.78 and 251,430.28 is: 346,975.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,163.28 : 632,268.78 = 251,430.28 : x
  2. Step 2: Convert to fraction form
    458,163.28/632,268.78 = 251,430.28/x
  3. Step 3: Cross multiply
    458,163.28x = 632,268.78 × 251,430.28
  4. Step 4: Simplify right side
    458,163.28x = 158,971,516,390.66
  5. Step 5: Solve for x
    x = 158,971,516,390.66/458,163.28
  6. Step 6: Final answer
    x = 346,975.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.